This week all the buzz is about cellphones and brain tumors. Who would possibly link cellphones and brain tumors? The World Health Organization, that’s WHO. This week, an agency in WHO announced that it was declaring cellphone use to be “possibly carcinogenic”, adding it to a group of substances which include lead, engine exhaust, chloroform, coffee and pickled vegetables. First, let’s make sure we understand what this does not mean. This does not mean that cellphone use is known to c...